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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65c1528cf9f13a1a3f36b5d6aa6b4e30cba0a4a1305faf562f4f11cd919530fe' 
  AND token = 'lrn7E78osaFR7Y9cQ5FK2VHwA/FR99gkYCNPda1sYpQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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