Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a3b788a1fc22668bcc44c009c2869877a2a8eaf2bd6ad6574ef3dd9580631d1' 
  AND token = 'qNolsDHxJwVJMQGsfaN+ceSSdGpF84VB43bPW5s/e5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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