Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75bf680192f6ba26250fb1917f911572b280dd8d67ef6625d41633354c1c9090' 
  AND token = 'e20UzWOIM0CnCZlaCMUMfbAy+bJWY4cj6S+frX/sSss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}