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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05871b70c3d3eb071d83598783527ba189fcddf6345f70accf151927f747d165' 
  AND token = 'zVZTanFHTWVkkd6VSTf2j3Iej4gk/Zy6ctBGTDoHP6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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