Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7663cc3c8bd124f95fa64b38786a3cf860e550848289e8397260a8df4d0b3c8' 
  AND token = 'hWmlTG+bFi8nPRDGM3W2Pr68H/8mb62KNoqT5lii5F0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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