Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fd6afdd8d5807dc2d8c103a9e898a9c11c267b318f5681b603f19724041de13' 
  AND token = 'Wy5LyifRFTFWAkEe1YW6NJtiB/gtRetVvxShWTDLUrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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