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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '07ef109fce3d7ef4e01d06dbba41faa34cc7ffcd225a944cc3a60e1cbbe3a754' 
  AND token = 'mCTvhD/u6L6GHWbWqTCPMv89AOvQ+dAMC6I8K/Aerlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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