Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93c1d8e3c48b713516e142d658e0d3376beaea1141066514c887a6bc1bc064bd' 
  AND token = 'vN9/a1ldgHK6mOZYwVNPsct+/IJt4EvvQbSqeT8QNqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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