Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '623cce712d1d2e8edbc32d70795c4005989fc50fe207579f3254ddd33e72358d' 
  AND token = '2byO3Axyy2dpI9KA31g9mNHTHLMsEWT8j44uFTCjuqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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