Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4d9a59694b8e1c99f6eccf5e6b06305525fff0a18744139846f86b685c581b69' 
  AND token = '1AIGDYpdXS6QWttd8ekWL3kIu+nLrqp9f3YzQbNpc60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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