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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13ad0993bcd858aa1ddee52528edd3f1fccf1c7b63125cd0d5a5c0052a5797d6' 
  AND token = '33EwOr6yx9IumR2Om+hbppKcuDoqy/ABXf913I9bd7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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