SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01aab48a39307c21d33968f9cbe5097b09a1e9ba774929762a6ad43c106cbce0' 
  AND token = 'JDLE4x6rkjRQbweKbkMuSgEadREzebB32mDEHyfWjCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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