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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f544ff48ec1449a7722bc011a0ae2b696618c5c29c1520e50ef5af9121e7d8f' 
  AND token = 'T0wLOYvXdBQPeVkJadLnX2H+2TA6w7txq1BNn9lAKqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}