Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9b3a1fed3681614d69b7d2a89ce53a9cfa6e29661c42e1a49a09902b00cab45c' 
  AND token = 'AijAkqALFgmKwS0wG5PcomGECXco3TA+taMo60TDxeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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