SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce7833bfbe6c5134c39b4a9f2d97eb04547220101f14f2d7090e38b691aed78d' 
  AND token = 'q+QLFH/MPE7CaYJkftkjiiwsPTlyWqgyAsz8G+md7fc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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