Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99eb9c3afd5c11bc046007e23a3df34e9ebd2c20affbc4db94789ceb468b4616' 
  AND token = 'XN90mS1kczfm2W/LBlltR2iQ7ILf0iWGL8NUStAs9O4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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