Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37d905334f465fce683226cf6a64edf5a132b23702e097711af1457a9ef5b643' 
  AND token = '/ysCLBo50BRFNTHjggddlVCH5fRDpaWxjWgP9dCu+rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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