Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eff9ec27c63148fa53c42ac4722930d27bce446ca902e93dfd200862bc572111' 
  AND token = 'TWM++OLdVLcX49c0L0M9Lz3l0x4ZwsZjcvLllhcvuGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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