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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f0156b709c80bd78cde1f64002954b40cf28245f59c0c66f4aea69dabe44bc7' 
  AND token = 'GJUs3Mhk0K8F3X6ei8SoiQyPF3HkT/RJI+HBIa+PBos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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