Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fbe0582b113bc83477bf1abea9c16d1c5de8863e1bab1de686410acffcad2dfa' 
  AND token = 'TQ6gzRoRxwL9jvr3r9HbSVk0GWE7QfWMvgt1OfZHxQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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