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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '4a3010a9cc0d4d1d1d720cde00dbabb51826b3416b6f71b1506ac58ce3bc3166' 
  AND token = 'vICRLRn6C1pkVFrJn4+XBLokqCOeFt0b+wgChlPZbpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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