Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41402c96c22da912d0b6a2ef085b41be386bc48c0aadaa3bbf8f31205aac146e' 
  AND token = 'BF6B07G1EcrMxAhhWOJEk9eOrjkCYd/UPgw4xF2EIqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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