Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1222b66707d7a0670ef221826a2a9604a1fda136d2603000fd6798b4d523568f' 
  AND token = '9xsO8iQxBgrkDeiplpRb3dF54iEB8z3E30Vg+bYiLjM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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