Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45dd0a369206a36f8be535a3d0627e30284c2b27997a60504cbcd9e58ae9280a' 
  AND token = 'mtsb6RiBBU+mbleHp6xmoPuwUrgB/iWehQkb0s/SVIY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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