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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '41931ee195bc1e232f0bd5f3d2b98d5fbec3e859ea221faa7bc7de98473cca91' 
  AND token = 'j+rswvFkYdo3wx9j8IF9/AZXHG88+6ZRsbrPuHmKef0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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