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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02464832aaccc038cbc4a67865dad239c15e02fc1346f8ef7e2ec85bf362880d' 
  AND token = 'ThyyCvUxLgsh3801ZChV4+rGgQCW8IZFa4gY94AKQcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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