Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20ad41eed83d59b37083be1052948bb06cc38b7abde87d29cc259106a2b7cf83' 
  AND token = 'mxSpyIWX/B+LojL5pj4s0sfFJfpeyRKIItuPieBDlA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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