Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee86aa0887387e40a3084e9f2ccdf1b509a604cfe2ca01822c6b699beb70b605' 
  AND token = 'TY9uQR0kiQ344YKiSKiXcuP4wCvPgTGlgLXPZYOelQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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