Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00f2aaa5e1386e63684409542bd9cfa32fda370879a93293fccacfa1924430ca' 
  AND token = 'GiQAZ7PUZINwWRRJTz9mCe14QW3gPgKNoO9U5J3fk2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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