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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63adba43466f48fde01298699f362fe97750612ff76c127ed2330007601a1f64' 
  AND token = 'fpwlUNwPBxnqt0gNT3npF7yNeH1Pij/QWMGMQDBMrwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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