Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0527fe888c40791e5242c60ecb756f34b5099c8e01caa739deee2f11d1ede528' 
  AND token = 'H+geK7Pz0i2Lrz2ZhH1eHiHqjrhE433/qkDeXoIRWxA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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