Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3828419d8d88e44c0850bf4fec9e19969a182b24cd100b2a1414e140a904501' 
  AND token = 'H2wiH7EyAURtyWrHY2iLws8g9LaCdaOnoqALKexvNEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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