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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd0a9a1ab76a57847515b54e52593de5190ca2466a1d8af9d31ef36de9b9c1f0c' 
  AND token = 'N8aewOLL/RmEFNZE/cG73aZFj4Iq1N1QgltsvutlO6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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