Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ba640a9171d4f1d9a6973a765bbef935acc324e8c0b3906e96d7412b34224b5' 
  AND token = 'XST++0OHVvDDo1DAPjT1UyyBa+Vz/5HPPCw0Ktr82GA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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