Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bb79017f91392b78325263a0653ec92661645fce23dd84f0a18aff04c2a678e' 
  AND token = 'V1mCc7LtZTFbb7aWFMgmSBHqFaqvSFjcq7mzsQmBP7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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