Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bc16c09a0a7891f7e68b49baf60c6f6465a599e76967bb2304bdfc2c550c0d5c' 
  AND token = 'eivOIEiqpUhryvY35kQCPT1Gup6LoNblwCYBs/xO9ls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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