Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '31cd82ebf8abddfe00d5adc119f7018d6cb9d7ef992e502952c21545b46f2049' 
  AND token = 'oxqR47RlhveZP6aCLMxqmtwYpkCXp2zx71iYwe+8Wi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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