Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf97ade356faa517d4feadadee8f459513161c46c2dd968babd6699a3eb2d8d4' 
  AND token = 'hSXeMnnbFgFAU3X8o5CI549h4GYw0OF99SB0nIY0Uuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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