Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8b9994750a8ef7c1968ec7a8f9b8392c657b79b073ef029b082c21801da91b8d' 
  AND token = 'djAnyEdos3xtrrPyHx4NE7/I8dOqE9eww6ugptKOA+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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