Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc1b7ba7647369d300eafbbd707fe56ad0ef65583794ba0139291f64cb608b0d' 
  AND token = 'YcFurbPwu/PBnQuFyW8K4q2aIu0x5rUtMlBWKOFHH3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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