Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2767d49fba9a478ef6926a930579c14da2f22a13fb200f3da54552ab80a3079e' 
  AND token = '92/59rKLNWxYoQ9+trvh8M/I2abf0SqzSI5vfo/QiKw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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