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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd67d468d45a1d71566e89fcefad081faf0d7d4e9b13fccefda57bb50f5728019' 
  AND token = 'TTjxVlVEn3euohIfIRfS8y6SgeU4hK4hSjPnXmDGwnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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