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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0c8feeb687f09e233dac03883dc37c5fc8659d151512de66a7725bd08a6a531e' 
  AND token = 'h2nK7SrpTDtN0hCiolR4e6y99Bgfp4Xhkq8i00ohiZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}