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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '626a44740f6c37a7f8912a85526a8aa8cda546b1545028c53f69548e7c66c893' 
  AND token = 'rdHKyQSVonkOD+8v51tibYgbh066EswjgJqjPUO3+4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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