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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '653ff6a24cfa6d43ac5447602c4269c7eba8ebb8b8767084893cd7ad0063faab' 
  AND token = 'CdT4eFilLbfSs/zVEnbGpjTmUSwwzLxA1UW75Le+id4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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