SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33f1873cd745b9fb65e8a471eb06db722caac384a9d162597c11c6106ab655b3' 
  AND token = 'ld7Z9JWvCWuAUkM/LCW8/qZjAjB4eXFabBPHvxoKtnc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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