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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '204694dd14e889693f91da41d610d1b55f58c77aa6bc90cf77cea9e4032d2d28' 
  AND token = 'oLIPw2HGeFC9sJZHoXoPGQTBoP03+MGuVeNe4nq7eWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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