Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1b64c91524d1459a310471e5dcfbef9ce9d7fad35b1814899c4cba71c534af0' 
  AND token = 'zPURer6EQQJobu7Fp3zab2vgLjX1p50uUNnjJkGnHgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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