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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a094322e433ed84fe6825b104cc657a4d6c3ccaa6e2e22b9ada427642ad7cd07' 
  AND token = '83VhiUCCneNkDH1eimVFysLIGoipqO+Q/Yyg3qOCcJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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