Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbcb0e5a32fd68183e55aa4032051a2929707b49a16232b871af5abe57392441' 
  AND token = 'fyXnCppM+GDn0x9NsHkVSQZXGkmV2m5yFP11Pl5LBv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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