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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ece64360397d5ec2363991b350ff76a3080eab1319695728c90d4e5f5166b40f' 
  AND token = 'K5LRLDf9MI2moEQHATGaclFpZZ9ACmT96b2kBOiymdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00133

JSON explain

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