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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '8963268dc399c65a6f00a257bbfe8b8a20fc22642b2b80c72dd4242971c0ffd1' 
  AND token = 'wRFcWiSqzj8WYqlRii8TuEo0QSrEVWBXaNYCQdxZNXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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