Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b6525787b52f041767642411b1f0fd88565128b9c4246595e785273cbeced58a' 
  AND token = 'drSrTc0QOADLR6x4wrph6Aqci7ZI5p/o/NMqv+J21xo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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