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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '82fb3fbf0f54384d1be0dc44d7f3097893830ac3130949b5021ffe02087744e7' 
  AND token = '4W2YDEr2UcVpZ4mWyK6UNsjk9DFC/r1j71wF8y8uVDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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