Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7861015ed6100ac051912b8e8e93d92c8e12f825455686ef8a3922cff3f31f82' 
  AND token = '7s9Q5WUcYFH+ZTA6M0qA9xty/QhpeV7eCyhTOQNc3U4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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