Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dfbe76315b9133f56b9cdbe804615747fd4857ffd1bd5ca9f12a310525d489e' 
  AND token = 'JT/SO+4C+qa/qoq/EN/teMwnr9O4fpolGrH7nkzKNww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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