Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dfe5023e08d85366797be504520a9a096fc6638f1ffe7b4eb8286290b690405b' 
  AND token = 'EBbD4wyWNBIrMv9lKeG26O/t4eZmcL8KSKNSYQUnIK4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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