SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bd113584a92f1f8dc55d959cad27aba4d312056b3cb31c7159705c34435703a7' 
  AND token = 'G7BT5N3fqPGD9pNeBKw1eGlIdL7dXF9tsxpvvZZsGYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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