Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6003aecec6926d89b32c7b9749da5c61ad37de3e553a50ba9ab133bea414852a' 
  AND token = 'JCEp8yd2KKE1mh0KBSmBgSQiFNkeA5x4msr6GEvgeg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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