Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb920deb216790d210537742330f6f7f658f3537180ded3afca2ff78f26be680' 
  AND token = 'lcDh5MjyYt8uYyZdiKh6eWFzIUsc44A6sAK35EBrVss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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